diff options
Diffstat (limited to 'sysdeps/sparc/sparc32/dl-machine.h')
| -rw-r--r-- | sysdeps/sparc/sparc32/dl-machine.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/sysdeps/sparc/sparc32/dl-machine.h b/sysdeps/sparc/sparc32/dl-machine.h index 4534464987..6977cdcd26 100644 --- a/sysdeps/sparc/sparc32/dl-machine.h +++ b/sysdeps/sparc/sparc32/dl-machine.h @@ -72,6 +72,17 @@ elf_machine_matches_host (const Elf32_Ehdr *ehdr) return 0; } +/* We have to do this because elf_machine_{dynamic,load_address} can be + invoked from functions that have no GOT references, and thus the compiler + has no obligation to load the PIC register. */ +#define LOAD_PIC_REG(PIC_REG) \ +do { register Elf32_Addr pc __asm("o7"); \ + __asm("sethi %%hi(_GLOBAL_OFFSET_TABLE_-4), %1\n\t" \ + "call 1f\n\t" \ + "add %1, %%lo(_GLOBAL_OFFSET_TABLE_+4), %1\n" \ + "1:\tadd %1, %0, %1" \ + : "=r" (pc), "=r" (PIC_REG)); \ +} while (0) /* Return the link-time address of _DYNAMIC. Conveniently, this is the first element of the GOT. This must be inlined in a function which @@ -80,6 +91,9 @@ static inline Elf32_Addr elf_machine_dynamic (void) { register Elf32_Addr *got asm ("%l7"); + + LOAD_PIC_REG (got); + return *got; } @@ -89,6 +103,8 @@ elf_machine_load_address (void) { register Elf32_Addr pc __asm("%o7"), pic __asm("%l7"), got; + LOAD_PIC_REG (pic); + /* Utilize the fact that a local .got entry will be partially initialized at startup awaiting its RELATIVE fixup. */ |